<template>
    <div id="aCoursesList" class="bg-fa of">
      <!-- /课程详情 开始 -->
      <section class="container">
        <section class="path-wrap txtOf hLh30">
          <a href="#" title class="c-999 fsize14">首页</a>
          \
          <a href="#" title class="c-999 fsize14">{{courseWebVo.subjectLevelOne}}</a>
          \
          <span class="c-333 fsize14">{{courseWebVo.subjectLevelTwo}}</span>
        </section>
        <div>
          <article class="c-v-pic-wrap" style="height: 357px;">
            <section class="p-h-video-box" id="videoPlay">
              <img height="357px" :src="courseWebVo.cover" :alt="courseWebVo.title" class="dis c-v-pic">
            </section>
          </article>
          <aside class="c-attr-wrap">
            <section class="ml20 mr15">
              <h2 class="hLh30 txtOf mt15">
                <span class="c-fff fsize24">{{courseWebVo.title}}</span>
              </h2>
              <section class="c-attr-jg">
                <span class="c-fff">价格：</span>
                <b class="c-yellow" style="font-size:24px;">￥{{courseWebVo.price}}</b>
              </section>
              <section class="c-attr-mt c-attr-undis">
                <span class="c-fff fsize14">主讲： {{courseWebVo.teacherName}}&nbsp;&nbsp;&nbsp;</span>
              </section>
              <section class="c-attr-mt of">
                <span class="ml10 vam">
                  <em class="icon18 scIcon"></em>
                  <a class="c-fff vam" title="收藏" href="#" >收藏</a>
                </span>
              </section>
              <section v-if="isbuy || Number(courseWebVo.price) === 0" class="c-attr-mt">
                <a href="#" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
              </section>
              <section v-else class="c-attr-mt">
                <a @click="createOrders()" href="#" title="立即购买" class="comm-btn c-btn-3">立即购买</a>
              </section>
            </section>
          </aside>
          <aside class="thr-attr-box">
            <ol class="thr-attr-ol">
              <li>
                <p>&nbsp;</p>
                <aside>
                  <span class="c-fff f-fM">购买数</span>
                  <br>
                  <h6 class="c-fff f-fM mt10">{{courseWebVo.buyCount}}</h6>
                </aside>
              </li>
              <li>
                <p>&nbsp;</p>
                <aside>
                  <span class="c-fff f-fM">课时数</span>
                  <br>
                  <h6 class="c-fff f-fM mt10">{{courseWebVo.lessonNum}}</h6>
                </aside>
              </li>
              <li>
                <p>&nbsp;</p>
                <aside>
                  <span class="c-fff f-fM">浏览数</span>
                  <br>
                  <h6 class="c-fff f-fM mt10">{{courseWebVo.viewCount}}</h6>
                </aside>
              </li>
            </ol>
          </aside>
          <div class="clear"></div>
        </div>
        <!-- /课程封面介绍 -->
        <div class="mt20 c-infor-box">
          <article class="fl col-7">
            <section class="mr30">
              <div class="i-box">
                <div>
                  <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                    <a name="c-i" class="current" title="课程详情">课程详情</a>
                  </section>
                </div>
                <article class="ml10 mr10 pt20">
                  <div>
                    <h6 class="c-i-content c-infor-title">
                      <span>课程介绍</span>
                    </h6>
                    <div class="course-txt-body-wrap">
                      <section class="course-txt-body">
                        <p v-html="courseWebVo.description"></p>
                      </section>
                    </div>
                  </div>
                  <!-- /课程介绍 -->
                  <div class="mt50">
                    <h6 class="c-g-content c-infor-title">
                      <span>课程大纲</span>
                    </h6>
                    <section class="mt20">
                      <div class="lh-menu-wrap">
                        <menu id="lh-menu" class="lh-menu mt10 mr10">
                          <ul>
                            <!-- 文件目录 -->
                            <li class="lh-menu-stair" v-for="chapter in chapterVideoList" :key="chapter.id">
                              <a href="javascript: void(0)" :title="chapter.title" class="current-1">
                                <em class="lh-menu-i-1 icon18 mr10"></em>{{chapter.title}}
                              </a>

                              <ol class="lh-menu-ol" style="display: block;">
                                <li class="lh-menu-second ml30" v-for="video in chapter.children" :key="video.id">
                                  <a :href="'/player/'+video.videoSourceId " target="_blank">
                                    <span class="fr">
                                      <i class="free-icon vam mr10">免费试听</i>
                                    </span>
                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{video.title}}
                                  </a>
                                </li>
                              </ol>
                            </li>
                          </ul>
                        </menu>
                      </div>
                    </section>
                  </div>
                  <!-- /课程大纲 -->
                </article>
              </div>
            </section>
          </article>
          <aside class="fl col-3">
            <div class="i-box">
              <div>
                <section class="c-infor-tabTitle c-tab-title">
                  <a title href="javascript:void(0)">主讲讲师</a>
                </section>
                <section class="stud-act-list">
                  <ul style="height: auto;">
                    <li>
                      <div class="u-face">
                        <a href="#">
                          <img :src="courseWebVo.avatar" width="50" height="50" alt>
                        </a>
                      </div>
                      <section class="hLh30 txtOf">
                        <a class="c-333 fsize16 fl" href="#">{{courseWebVo.teacherName}}</a>
                      </section>
                      <section class="hLh20 txtOf">
                        <span class="c-999">{{courseWebVo.intro}}</span>
                      </section>
                    </li>
                  </ul>
                </section>
              </div>
            </div>
          </aside>
          <div class="clear"></div>
        </div>
      </section>
      <!-- /课程详情 结束 -->
      <div class="mt50 commentHtml"><div>
      <h6 class="c-c-content c-infor-title" id="i-art-comment">
        <span class="commentTitle">课程评论</span>
      </h6>
      <section class="lh-bj-list pr mt20 replyhtml">
        <ul>
          <li class="unBr">
            <aside class="noter-pic">
              <img width="50" height="50" class="picImg" src="~/assets/img/avatar-boy.gif">
              </aside>
            <div class="of">
              <section class="n-reply-wrap">
                <fieldset>
                  <textarea name="" v-model="comment.content" placeholder="输入您要评论的文字" id="commentContent"></textarea>
                </fieldset>
                <p class="of mt5 tar pl10 pr10">
                  <span class="fl "><tt class="c-red commentContentmeg" style="display: none;"></tt></span>
                  <input type="button" @click="addComment()" value="回复" class="lh-reply-btn">
                </p>
              </section>
            </div>
          </li>
        </ul>
      </section>
      <section class="">
          <section class="question-list lh-bj-list pr">
            <ul class="pr10">
              <li v-for="(comment,index) in data.items" v-bind:key="index">
                  <aside class="noter-pic">
                    <img width="50" height="50" class="picImg" :src="comment.avatar">
                    </aside>
                  <div class="of">
                    <span class="fl"> 
                    <font class="fsize12 c-blue"> 
                      {{comment.nickname}}</font>
                    <font class="fsize12 c-999 ml5">评论：</font></span>
                  </div>
                  <div class="noter-txt mt5">
                    <p>{{comment.content}}</p>
                  </div>
                  <div class="of mt5">
                    <span class="fr"><font class="fsize12 c-999 ml5">{{comment.gmtCreate}}</font></span>
                  </div>
                </li>
              
              </ul>
          </section>
        </section>
        
        <!-- 公共分页 开始 -->
        <div class="paging">
            <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
            <a
            :class="{undisable: !data.hasPrevious}"
            href="#"
            title="首页"
            @click.prevent="gotoPage(1)">首</a>
            <a
            :class="{undisable: !data.hasPrevious}"
            href="#"
            title="前一页"
            @click.prevent="gotoPage(data.current-1)">&lt;</a>
            <a
            v-for="page in data.pages"
            :key="page"
            :class="{current: data.current == page, undisable: data.current == page}"
            :title="'第'+page+'页'"
            href="#"
            @click.prevent="gotoPage(page)">{{ page }}</a>
            <a
            :class="{undisable: !data.hasNext}"
            href="#"
            title="后一页"
            @click.prevent="gotoPage(data.current+1)">&gt;</a>
            <a
            :class="{undisable: !data.hasNext}"
            href="#"
            title="末页"
            @click.prevent="gotoPage(data.pages)">末</a>
            <div class="clear"/>
        </div>
        <!-- 公共分页 结束 -->
      </div>
    </div>
    </div>
  </template>
  
  <script>
  import courseApi from '@/api/course'
  import comment from '@/api/commonedu'
  import orderApi from '@/api/orders'
  export default {
    asyncData({ params, error }) {
      return{courseId:params.id}
    },
    data() {
      return {
        data:{},
        page:1,
        limit:4,
        total:10,
        comment:{
          content:'',
          courseId:''
        },
        courseWebVo:{},
        courseInfo:{},
        chapterVideoList:[],
          isbuy: false,
      }
    },
    created() {//在页面渲染之前执行
      this.initComment()
      this.initCourseInfo()
    },
    methods:{
      //查询课程详情信息
      initCourseInfo(){
        courseApi.getCourseInfo(this.courseId)
          .then(response => {
              this.courseWebVo = response.data.data.courseWebVo,
              this.chapterVideoList=response.data.data.chapterVideoList,
              this.isbuy=response.data.data.isBuy
          })
        },
      initComment(){
       comment.getPageList(this.page, this.limit, this.courseId).then(response => {
           this.data = response.data.data
       })
    },
    addComment(){
        this.comment.courseId = this.courseId
        this.comment.teacherId = this.courseInfo.teacherId
        comment.addComment(this.comment).then(response => {
            if(response.data.success){
                this.comment.content = ''
                this.initComment()
            } else{
              //提示注册成功
                this.$message({
                  message: "请登录"
                }) 
            }
        })
    },
    gotoPage(page){
          comment.getPageList(page, this.limit,this.courseId).then(response => {
              this.data = response.data.data
          })
      },
      createOrders(){
        orderApi.createOrders(this.courseId)
          .then(response =>{
            console.log("***"+response.data.data.orderId)
            //获取返回订单号
            //生成订单之后，跳转订单显示页面
            this.$router.push({path:'/orders/'+response.data.data.orderId})
          })
    }
  }
  };
  </script>
  